Answer:
a) subtitution effecrt as the opportunity cost for consuming Doritos increased therefore, a portion of the demand in this market will steer into other like Lays.
b) wealth effect the consumption will increase as we are given an extraordinary income
c) income effect. As the income decrease, the consumer preferences may lead to consume inferior good rather than normal good or normal goods and cut-off luxury goods.
Step-by-step explanation: